139 lines
5.4 KiB
C
139 lines
5.4 KiB
C
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//+-----------------------------------------------------------------------
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//
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// Add/Remove Programs Data Source Object
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//
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//------------------------------------------------------------------------
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#ifndef _DATASRC_H_
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#define _DATASRC_H_
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#include <simpdata.h> // for OLEDBSimpleProvider
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#include "mtxarray.h" // for CMtxArray
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#include "worker.h"
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#include "iface.h" // for IARPSimpleProvider
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// The load state progression can be as follows:
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//
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// LS_NOTSTARTED --> LS_LOADING_SLOWINFO --> LS_DONE
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//
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// or
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//
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// LS_NOTSTARTED --> LS_DONE
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//
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enum LOAD_STATE
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{
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LS_NOTSTARTED, // OSP is not initialized
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LS_LOADING_SLOWINFO, // loading slow info (worker thread)
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LS_DONE, // completely finished
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};
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// Do not build this file if on Win9X or NT4
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#ifndef DOWNLEVEL_PLATFORM
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//------------------------------------------------------------------------
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//
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// CDataSrc (ARP Data Source Object)
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//
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// This is the OSP (OLEDB Simple Provider). It organizes
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// the data in matrix form and disseminates the data to the data
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// consumer via the OLEDBSimpleProvider interface.
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//
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//------------------------------------------------------------------------
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class CDataSrc : public CWorkerThread,
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public OLEDBSimpleProvider,
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public IWorkerEvent,
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public IARPSimpleProvider,
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public ISequentialStream
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{
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public:
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// *** IUnknown ***
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virtual STDMETHODIMP_(ULONG) AddRef (void) {return CWorkerThread::AddRef();};
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virtual STDMETHODIMP_(ULONG) Release (void) {return CWorkerThread::Release();};
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virtual STDMETHODIMP QueryInterface (REFIID riid, LPVOID * ppvObj);
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// *** ISequentialStream ***
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STDMETHOD(Read) (void * pvData, ULONG cbData, ULONG * pcbRead);
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STDMETHOD(Write) (void const * pvData, ULONG cbData, ULONG * pcbWritten);
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// *** OLEDBSimpleProvider ***
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STDMETHOD(getRowCount) (DBROWCOUNT *pcRows);
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STDMETHOD(getColumnCount) (DB_LORDINAL *pcCols);
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STDMETHOD(getRWStatus) (DBROWCOUNT iRow, DB_LORDINAL iCol, OSPRW *prwStatus);
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STDMETHOD(getVariant) (DBROWCOUNT iRow, DB_LORDINAL iCol, OSPFORMAT format, VARIANT *pVar);
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STDMETHOD(setVariant) (DBROWCOUNT iRow, DB_LORDINAL iCol, OSPFORMAT format, VARIANT Var);
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STDMETHOD(getLocale) (BSTR *pbstrLocale);
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STDMETHOD(deleteRows) (DBROWCOUNT iRow, DBROWCOUNT cRows, DBROWCOUNT *pcRowsDeleted);
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STDMETHOD(insertRows) (DBROWCOUNT iRow, DBROWCOUNT cRows, DBROWCOUNT *pcRowsInserted);
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STDMETHOD(find) (DBROWCOUNT iRowStart, DB_LORDINAL iCol, VARIANT val,
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OSPFIND findFlags, OSPCOMP compType, DBROWCOUNT *piRowFound);
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STDMETHOD(addOLEDBSimpleProviderListener)(OLEDBSimpleProviderListener *pospIListener);
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STDMETHOD(removeOLEDBSimpleProviderListener)(OLEDBSimpleProviderListener *pospIListener);
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STDMETHOD(getEstimatedRows) (DBROWCOUNT *pcRows);
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STDMETHOD(isAsync) (BOOL *pbAsync);
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STDMETHOD(stopTransfer) (void);
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// *** IWorkerEvent methods ***
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STDMETHOD(FireOnDataReady) (DBROWCOUNT iRow);
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STDMETHOD(FireOnFinished) (void);
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STDMETHOD(FireOnDatasetChanged) (void);
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// *** IARPSimpleProvider methods ***
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STDMETHOD(Initialize) (IShellAppManager * psam, IARPEvent *, DWORD dwEnum);
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STDMETHOD(EnumerateItemsAsync) (void);
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STDMETHOD(Recalculate) (void);
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STDMETHOD(SetSortCriteria) (BSTR bstrSortExpr);
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STDMETHOD(SetFilter) (BSTR bstrFilter);
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STDMETHOD(Sort) (void);
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STDMETHOD(DoCommand) (HWND hwndParent, APPCMD appcmd, DBROWCOUNT iRow);
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STDMETHOD(TransferData) (IARPSimpleProvider * parposp);
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CDataSrc();
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// *** IARPWorker *** (overide)
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STDMETHOD(KillWT) (void);
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private:
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virtual ~CDataSrc();
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inline BOOL _IsValidDataRow(DBROWCOUNT iRow);
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inline BOOL _IsValidRow(DBROWCOUNT iRow);
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inline BOOL _IsValidCol(DB_LORDINAL iCol);
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inline BOOL _IsValidCell(DBROWCOUNT iRow, DB_LORDINAL iCol);
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DBROWCOUNT _CalcRows(void);
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DB_LORDINAL _CalcCols(void);
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HRESULT _ApplySortCriteria(BOOL bFireDataSetChanged);
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IAppData * _GetAppData(DBROWCOUNT iRow);
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// NOTE: this is not used to kill the apps enumeration thread!!
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// kills only the thread that get slow appinfo.
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HRESULT _KillMtxWorkerThread(void);
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HRESULT _EnumAppItems(DWORD dwEnum, LPCWSTR pszCategory);
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DWORD _ThreadStartProc();
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ULONG _cRef; // interface reference count
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LOAD_STATE _loadstate;
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DB_LORDINAL _cCols; // count of columns
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DBROWCOUNT _cRows; // count of rows
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DWORD _dwEnum; // items to enumerate (ENUM_*)
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BITBOOL _fSortDirty: 1; // TRUE: the sort criteria is dirty
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BITBOOL _fFilterDirty: 1; // TRUE: the sort criteria is dirty
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BITBOOL _fAppsEnumed : 1; // TRUE if we have already finished enumerating apps
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BITBOOL _fInEnumOp : 1; // TRUE if we are in a enumeraion opertion
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IShellAppManager * _psam;
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IARPEvent * _parpevt;
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IMtxArray * _pmtxarray; // data is stored here
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CComBSTR _cbstrSort; // sort string. contains name of column to sort.
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CComBSTR _cbstrCategory; // category. used only for published apps.
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};
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HRESULT CDataSrc_CreateInstance(REFIID riid, LPVOID * ppvObj);
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#endif //DOWNLEVEL_PLATFORM
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#endif // _DATASRC_H_
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